CN201725308U - Touch screen - Google Patents
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- CN201725308U CN201725308U CN2010201158679U CN201020115867U CN201725308U CN 201725308 U CN201725308 U CN 201725308U CN 2010201158679 U CN2010201158679 U CN 2010201158679U CN 201020115867 U CN201020115867 U CN 201020115867U CN 201725308 U CN201725308 U CN 201725308U
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Abstract
The utility model relates to a touch screen. The touch screen comprises at least two optical sensors, a processing unit connected with the optical sensors, at least two luminous sources, a retro-reflective strip and a reflection element obliquely mounted in all or part of area at the periphery of a touch detection area; the included angle between the reflection element and the touch surface of the touch detection area is an acute angle or an obtuse angle; in the area where the reflection element is mounted, the retro-reflective strip is mounted in the area covered by part of or all light emitted by the at least two luminous sources and reflected by the reflection element; and the reflection efficiency that light emitted by the at least two luminous sources is reflected by the reflection element together with the retro-reflective strip is greater than the reflection efficiency that light emitted by the at least two luminous sources is reflected by the retro-reflective strip independently mounted at the periphery of the touch detection area. The utility model can strengthen light reflected to the optical sensors so as to improve the quality of image data.
Description
Technical field
The utility model relates to field of photoelectric technology, relates in particular to a kind of touch-screen.
Background technology
Along with popularizing of computer technology, in early 1990s a kind of new human-computer interaction technology one touch screen technology has appearred.Adopt this technology, the user just can the operational computations machine as long as touch figure on the computer display or literal lightly with hand, thereby has broken away from the constraint of keyboard and mouse, is very easy to the user.
Band camera touch-screen is a kind of view data by the camera collection touch objects, sends view data to processing unit again and handles, thereby detect the touch-screen of the positional information of touch objects.Wherein, the quality of the view data of the levels of precision of the positional information of detected touch objects and camera collection has substantial connection.Therefore in order to make the high-quality view data of camera collection, on this touch-screen light source can be housed.In the prior art, row's infraluminescence pipe usually is installed as light source on the touch-screen framework on camera opposite, but this light source cost cost is too high, thereby causes with the production cost of camera touch-screen higherly, influence applying of this kind touch-screen.
In order to overcome into the too high problem of product cost, a kind of new band camera touch-screen has appearred, as shown in Figure 1, structural representation for band camera touch-screen in the prior art, comprise touch-screen framework 62, be installed in touch-screen framework 62 long limit two ends two infrared cameras 9 and 10, be installed in two infrared light supplies 12 and 13 of contiguous infrared camera 9 and 10 position, the processing unit 66 that is installed in the retroreflecting bar 64 on the edge of touch-screen framework 62 and is connected with 10 with infrared camera 9 respectively respectively.Wherein, the inside of touch-screen framework 62 is for touching detection zone 61, retroreflecting bar 64 will reflex to infrared camera 9 and 10 respectively by the light of infrared light supply 12 and 13 emissions, infrared camera 9 and 10 acquisition of image data respectively also arrives this image data transmission processing unit 66, and processing unit 66 is handled these view data to determine the positional information of touch objects.Because the cost of retroreflecting bar 64 is lower, therefore greatly reduce the production cost of touch-screen.But the inventor finds that the reflection efficiency of retroreflecting bar 64 reduces along with the increase of incident angle in research in the process of the present utility model, and promptly along with the increase of incident angle, retroreflecting bar 64 reflected back infrared cameras 9 and 10 light will reduce.With infrared light supply 12 is example, is transmitted into the incident angle θ of the light of retroreflecting bar 64 when infrared light source 12
1When spending greater than 55, infrared light supply 12 is transmitted into wide big minimizing on the retroreflecting bar 64 and the reflection efficiency of retroreflecting bar 64 sharply reduces, the light of reflected back infrared light supply 12 is with big high attenuation, thereby make that the brightness of cross spider zone A is less, when touch objects is positioned at cross spider zone A, the view data that infrared camera 9 is gathered second-rate reduced the degree of accuracy of the positional information of the touch objects that detects.Wherein, incident angle refers to the angle of vertical line that infrared light supply 12 is transmitted into the surface of the light of retroreflecting bar 64 and retroreflecting bar 64.There is same problem for infrared light supply 13.
The utility model content
The utility model provides a kind of touch-screen, in order to realize improving the reflection efficiency of retroreflecting bar, thereby improves the quality of the view data that optical sensor gathers, thus the positional information of detected touch objects more accurately.
The utility model provides a kind of touch-screen, comprise at least two optical sensors that are installed in around the touch-screen detection zone, the processing unit that is connected with described at least two optical sensors, be installed at least two light emitting sources of the position that is close to described at least two optical sensors and be installed in described touch detection zone retroreflecting bar on every side respectively, also comprise:
Reflecting element be installed in described touch detection zone all or part of zone on every side, and the angle between the touch-surface of described touch detection zone is acute angle or obtuse angle;
In the zone that described reflecting element is installed, described retroreflecting bar is installed in by described two light emitting sources emission and through the zone that part or all of light covered of described reflecting element reflection at least, the light that described at least two light emitting sources are transmitted into described reflecting element reflexes to described retroreflecting bar through described reflecting element, again through the described reflecting element of described retroreflecting bar reflected back, reflex to described at least two optical sensors through described reflecting element again, when described reflecting element and the acting in conjunction of described retroreflecting bar are arranged separately in around the described touch detection zone to the reflection of light efficient of described at least two light emitting sources emission greater than described retroreflecting bar to the reflection of light efficient of described at least two light emitting sources emission.
In the utility model, in the zone that returns reflection bar and reflecting element is installed, when retroreflecting bar and reflecting element acting in conjunction are arranged separately on the edge of touch-screen framework greater than the retroreflecting bar to reflection of light efficient to the reflection of light efficient of at least two light emitting sources emissions, the light that retroreflecting bar and reflecting element acting in conjunction reflex at least two optical sensors will increase, thereby improved the quality of the view data of at least two optical sensor collections, processing unit can detect the positional information of touch objects more accurately further.
Description of drawings
Fig. 1 is the structural representation of band camera touch-screen in the prior art;
Fig. 2 is the structural representation of a kind of touch-screen first embodiment of the utility model;
Fig. 3 is equipped with a kind of diagrammatic cross-section of the zone of reflecting element and retroreflecting bar along the PP line among a kind of touch-screen first embodiment of the utility model;
Fig. 4 is equipped with the another kind of diagrammatic cross-section of the zone of reflecting element and retroreflecting bar along the PP line among a kind of touch-screen first embodiment of the utility model;
Fig. 5 obtains the principle schematic of touch objects positional information for processing unit among a kind of touch-screen first embodiment of the utility model;
Fig. 6 is the structural representation of a kind of touch-screen second embodiment of the utility model;
Fig. 7 is the structural representation of a kind of touch-screen the 3rd embodiment of the utility model;
Fig. 8 is the structural representation of a kind of touch-screen the 4th embodiment of the utility model;
Fig. 9 is the structural representation of a kind of touch-screen the 5th embodiment of the utility model.
Embodiment
The utility model will be further described below in conjunction with specification drawings and specific embodiments.
A kind of touch-screen first embodiment
As shown in Figure 2, structural representation for a kind of touch-screen first embodiment of the utility model, can comprise: touch detection zone 61, touch-screen framework 62, at least two optical sensors 631,632 ... 63m, retroreflecting bar 64, at least two light emitting sources 651,652 ... 65n, processing unit 66, and the zone 67 that retroreflecting bar and reflecting element are installed.Wherein, m and n are the natural number more than or equal to 2, and m is more than or equal to n.
Touch-screen framework 62 is installed in and touches around the detection zone 61.At least two optical sensors 631,632 ... 63m, retroreflecting bar 64, at least two light emitting sources 651,652 ... 65n, processing unit 66, and retroreflecting bar and reflecting element in the zone 67 are installed on the touch-screen framework 62.Processing unit 66 and at least two optical sensors 631,632 ... 63m connects.At least two light emitting sources 651,652 ... 65n is installed in contiguous at least two optical sensors 631,632 respectively ... the position of 63m, preferably, at least two light emitting sources 651,652 ... 65m can be placed at least two optical sensors 631,632 ... on the 63n, alternatively, at least two light emitting sources 651,652 ... 65m also can be placed at least two optical sensors 631,632 ... the 63n next door, at least two light emitting sources 651,652 ... 65m can also be placed at least two optical sensors 631,632 ... under the 63n.Retroreflecting bar 64 is arranged separately on the edge of touch-screen framework 62 and is vertical with the plane, touch-surface place that touches detection zone 61.Subregion on the edge that retroreflecting bar in the zone 67 and reflecting element are installed in touch-screen framework 62.
Preferably, retroreflecting bar and the reflecting element installed in the zone 67 can have following two kinds of structures: as shown in Figure 3, for among a kind of touch-screen first embodiment of the utility model a kind of diagrammatic cross-section of the zone of reflecting element and retroreflecting bar along the PP line being installed, in the zone 67 retroreflecting bar 64 and reflecting element 671 are installed; Wherein, reflecting element 671 is to tilting near the direction that touches detection zone 61, and the angle between the touch-surface of touch detection zone 61 is an acute angle, the touch-surface of retroreflecting bar 64 and touch detection zone 61 in one plane can cover by at least two light emitting sources 651,652 ... whole light that 65n is transmitted into reflecting element 671 and reflects through reflecting element 671.As shown in Figure 4, for among a kind of touch-screen first embodiment of the utility model the another kind of diagrammatic cross-section of the zone of reflecting element and retroreflecting bar along the PP line being installed, reflecting element 671 is to tilting away from the direction that touches detection zone 61, and the angle between the touch-surface of touch detection zone 61 is the obtuse angle, retroreflecting bar 64 is installed in reflecting element 671 tops, can cover by at least two light emitting sources 651,652 ... whole light that 65n is transmitted into reflecting element 671 and reflects through reflecting element 671.In the present embodiment, at least two light emitting sources 651,652 ... 65m is used to illuminate touch detection zone 61.Retroreflecting bar 64 is used at least two light emitting sources 651,652 ... the light that 65m is transmitted into retroreflecting bar 64 reflexes at least two optical sensors 631,632 ... 63n reflexes to reflecting element 671 the light reflected back reflecting element 671 of retroreflecting bar 64.Reflecting element 671 is used at least two light emitting sources 651,652 ... the light that 65m is transmitted into reflecting element 671 reflexes to retroreflecting bar 64, and the light with retroreflecting bar 64 reflected back reflecting elements 671 reflexes at least two optical sensors 631,632 again ... 63n.At least two optical sensors 631,632 ... 63n is used to obtain view data.Processing unit 66 is used to handle this view data to obtain the positional information of touch objects.
Briefly introduce the principle of work of Fig. 3 and synoptic diagram shown in Figure 4 below: because each light emitting source reason is identical, is example at this with light emitting source 651, again referring to Fig. 3, angle between reflecting element 671 and the touch-surface is β, light and the angle between the reflecting element 671 that light emitting source 651 is transmitted into reflecting element 671 are α, when the light of light emitting source 651 emission after reflecting element 671 reflections, the angle that is transmitted between the vertical line of the light of retroreflecting bar 64 and retroreflecting bar 64 is θ, then has following relation:
α+β+90°-θ＝180°
Can derive: alpha+beta-θ=90 °.Therefore, can be by adjusting β, make angle theta that light emitting source 651 is transmitted into light that reflecting element 671 reflexes to retroreflecting bar 64 through reflecting element 671 again and the vertical line of retroreflecting bar 64 less than 30 degree, and spend near 0 as far as possible.In addition, can also make touch-screen framework 62 narrow as much as possible by adjusting β.
Again referring to Fig. 4, angle between reflecting element 671 and the touch-surface is β, light and the angle between the reflecting element 671 that light emitting source 651 is transmitted into reflecting element 671 are α, angle between retroreflecting bar 64 and the reflecting element 671 is ω, when the light of light emitting source 651 emission after reflecting element 671 reflections, the angle that is transmitted between the vertical line of the light of retroreflecting bar 64 and retroreflecting bar 64 is θ, then has following relation:
α+ω+90°-θ＝180°
Can derive: α+ω-θ=90 °.And α and β have direct relation, therefore, can be by adjusting β and ω, make angle theta that light emitting source 651 is transmitted into light that reflecting element 671 reflexes to retroreflecting bar 64 through reflecting element 671 again and the vertical line of retroreflecting bar 64 less than 30 degree, and spend near 0 as far as possible.In addition, can also make touch-screen framework 62 narrow as much as possible by adjusting β and ω.
In the present embodiment, installed in the zone 67 of retroreflecting bar 64 and reflecting element 671, retroreflecting bar 64 and reflecting element 671 actings in conjunction are at least two light emitting sources 651,652 ... when the reflection of light efficient of 65m emission is arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 at least two light emitting sources 651,652 ... the reflection of light efficient of 65m emission.
Alternatively, in synoptic diagram shown in Figure 3, the retroreflecting bar 64 of zone in 67 can also be not with the touch-surface that touches detection zone 61 in one plane, as long as make at least two light emitting sources 651,652 ... 65m is transmitted into the angle theta of vertical line that reflecting element 671 reflexes to the light of retroreflecting bar 64 and retroreflecting bar 64 through reflecting element 671 again less than 30 degree and get final product near 0 degree as far as possible.In addition, retroreflecting bar 64 can also only cover by at least two light emitting sources 651,652 ... the part light that 65n is transmitted into reflecting element 671 and reflects through reflecting element 671 is as long as retroreflecting bar 64 and reflecting element 671 actings in conjunction are at least two light emitting sources 651,652 ... when the reflection of light efficient of 65m emission is arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 at least two light emitting sources 651,652 ... the reflection of light efficient of 65m emission gets final product.Retroreflecting bar 64 shown in Fig. 3 and Fig. 4 can not be in contact with one another with reflecting element 671 yet.
The principle of work of present embodiment is as follows: when not having touch objects in touching detection zone 61, at least two light emitting sources 651,652 ... 65m is transmitted into retroreflecting bar 64 and reflecting element 671 with light, wherein, the part light that is transmitted on the retroreflecting bar 64 reflexes at least two optical sensors 631 through retroreflecting bar 64,632 ... 63n, be transmitted into the part light on the reflecting element 671, reflex to retroreflecting bar 64 through reflecting element 671, again through retroreflecting bar 64 reflected back reflecting elements 671, reflex at least two optical sensors 631 through reflecting element 671 again, 632 ... 63n, at least two optical sensors 631,632 ... the view data that 63n gathers all is a bright spot.When in touching detection zone 61, having touch objects, at least two light emitting sources 651,652 ... the light that 65m is transmitted into retroreflecting bar 64 and reflecting element 671 thing that can be touched shelters from a part, this part light can not at least two optical sensors of reflected back 631,632 ... 63n, at this moment, at least two optical sensors 631,632 ... have dim spot area in the view data that 63n gathers.At least two optical sensors 631,632 ... 63n handles to processing unit 66 image data transmission of gathering.If processing unit 66 detects and has dim spot area in the view data, then prove the existence of touch objects, and then according at least two optical sensors 631,632 ... the positional information of the image data acquisition touch objects of two optical sensors among the 63n.Because in zone 67, retroreflecting bar 64 and reflecting element 671 actings in conjunction are at least two light emitting sources 651,652 ... when the reflection of light efficient of 65m emission is arranged separately on the edge that touches framework 62 greater than retroreflecting bar 64 at least two light emitting sources 651,652 ... the reflection of light efficient of 65m emission, therefore, retroreflecting bar 64 and reflecting element 671 actings in conjunction reflex at least two optical sensors 631,632 ... light among the 63n reflexes at least two optical sensors 631 when being arranged separately on the edge of touch-screen framework 62 more than retroreflecting bar 64,632 ... light among the 63n, at least two optical sensors 631,632 ... the view data quality that 63n gathers is higher, and the positional information of the touch objects that processing unit 66 obtains is more accurate.
How briefly introduce processing unit 66 below according at least two optical sensors 631,632 ... the positional information of the image data acquisition touch objects of two optical sensors among the 63n: with optical sensor 631 and 632 is example, as shown in Figure 5, for processing unit among a kind of touch-screen first embodiment of the utility model obtains the principle schematic of touch objects positional information, processing unit 66 can obtain the number of degrees at angle 1 according to the position of dim spot area in the view data of optical sensor 631 collections, position according to dim spot area in the view data of optical sensor 632 collections obtains the number of degrees at angle 2, and the distance L between optical sensor 631 and the optical sensor 632 is known, therefore, processing unit 66 can adopt triangulation to measure the positional information of touch objects 68.
In the present embodiment, preferably, reflecting element 671 can be level crossing.Alternatively, reflecting element 671 can also be the smooth higher elements of other reflection efficiencies such as metal surface.
Need to prove, the zone 67 that reflecting element 671 and retroreflecting bar 64 be installed can also comprise the Zone Full on the edge of touch-screen framework 62, as long as reflecting element 671 and 64 actings in conjunction of retroreflecting bar are at least two light emitting sources 651,652 ... when the reflection of light efficient of 65n emission is arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 at least two light emitting sources 651,652 ... the reflection of light efficient of 65n emission.
In the present embodiment, can also not comprise touch-screen framework 62, at this moment, at least two optical sensors 631,632 ... 63m, retroreflecting bar 64, at least two light emitting sources 651,652 ... 65n, processing unit 66, and reflecting element 671 and the retroreflecting bar 64 of zone in 67 is installed in and touches around the detection zone 61.
In the present embodiment, since be installed in the zone in 67 retroreflecting bar 64 and reflecting element 671 actings in conjunction reflection of light efficient is arranged separately in touch-screen framework 62 greater than retroreflecting bar 64 the edge on the time at least two light emitting sources 651,652 ... the reflection of light efficient of 65m emission, retroreflecting bar 64 and reflecting element 671 actings in conjunction reflex at least two optical sensors 631,632 ... the light of 63n will increase, thereby at least two optical sensors 631 have been improved, 632 ... the quality of the view data that 63n gathers, processing unit 66 can detect the positional information of touch objects more accurately further.
A kind of touch-screen second embodiment
As shown in Figure 6, be the structural representation of a kind of touch-screen second embodiment of the utility model, be with the difference of structural representation shown in Figure 2, in the present embodiment, n=2, m=2.
Touch-screen framework 62 is a rectangle, can comprise first edge 621, second edge 622, the 3rd edge 623 and the 4th edge 624, and wherein, first edge 621 is relative with the 3rd edge 623, and second edge 622 is relative with the 4th edge 624.Optical sensor 631 is installed in the angle of cut place at first edge 621 and second edge 622, and optical sensor 632 is installed in the angle of cut place at first edge 621 and the 4th edge 624. Light emitting source 651 and 652 be installed in respectively optical sensor 631 and 632 near.Retroreflecting bar 64 is installed on second edge 622, the 3rd edge 623 and the 4th edge 624.
In the present embodiment, the angle of the vertical line of the retroreflecting bar 64 on light that comprises light emitting source 651 on the edge of touch-screen framework 62 or light emitting source 652 emissions and the edge that is arranged separately in touch-screen framework 62 of the zone 67 that reflecting element 671 and retroreflecting bar 64 be installed is greater than the zones of 55 degree.When retroreflecting bar 64 is arranged separately on the edge of touch-screen framework 62, the angle of the vertical line of the retroreflecting bar 64 on light emitting source 651 or light emitting source 652 light of launching and the edge that is arranged separately in touch-screen framework 62 is greater than the zones of 55 degree, increase along with this angle, the reflection efficiency of retroreflecting bar 64 sharply reduces, and the brightness of cross spider area B is less.And after reflecting element 671 and retroreflecting bar 64 are installed in this zone, the angle that reflecting element 671 and 64 actings in conjunction of retroreflecting bar make light emitting source 651 or light emitting source 652 be transmitted into the vertical line of the light of retroreflecting bar 64 and retroreflecting bar 64 is reduced to less than 30 degree, and as far as possible near 0 degree, thereby increased the reflection efficiency of retroreflecting bar 64, reflecting element 671 and 64 actings in conjunction of retroreflecting bar have increased the light that reflexes to optical sensor 631 and optical sensor 632, therefore, the brightness of cross spider area B increases, the view data quality that two optical sensors 631 and optical sensor 632 are gathered is higher, and the positional information of the touch objects that processing unit 66 obtains is more accurate.
Alternatively, the angle of the vertical line of the retroreflecting bar 64 on light that can also include only light emitting source 651 on the edge of touch-screen framework 62 or light emitting source 652 emissions and the edge that is arranged separately in touch-screen framework 62 of the zone 67 that reflecting element 671 and retroreflecting bar 64 be installed is greater than the subregion in the zones of 55 degree.
Preferably, reflecting element 671 is installed in around the described touch detection zone, the light of described at least two light emitting sources emission and the angle that is arranged separately in the vertical line that touches the retroreflecting bar around the detection zone are greater than 45 degree and be less than or equal to subregion or Zone Full in the zones of 55 degree.
The utility model by be installed in the zone in 67 retroreflecting bar 64 and reflecting element 671 actings in conjunction reflection of light efficient is arranged separately in touch-screen framework 62 greater than retroreflecting bar 64 the edge on the time to the reflection of light efficient of two light emitting sources 651 and 652 emissions, the light that retroreflecting bar 64 and reflecting element 671 actings in conjunction reflex to optical sensor 631 and 632 will increase, thereby improved the quality of optical sensor 631 and 632 view data of gathering, processing unit 66 can detect the positional information of touch objects more accurately further.
A kind of touch-screen the 3rd embodiment
As shown in Figure 7, structural representation for a kind of touch-screen the 3rd embodiment of the utility model, be with the difference of structural representation shown in Figure 6, in the present embodiment, for the ease of installing, make that the outward appearance of product is more attractive in appearance, the zone 67 that reflecting element 671 and retroreflecting bar 64 are installed can comprise second edge 622, the Zone Full at the 3rd edge 623 and the 4th edge 624, as long as in this zone, the reflection of light efficient to two light emitting sources 651 and 652 emissions when retroreflecting bar 64 and reflecting element 671 actings in conjunction are arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 to reflection of light efficient get final product.
Again referring to Fig. 7, alternatively, the zone 67 that reflecting element 671 and retroreflecting bar 64 are installed also can not comprise second edge 622 or the 4th edge 624, perhaps do not comprise second edge 622 and the 4th edge 624, as long as in the zone 67 that reflecting element 671 and retroreflecting bar 64 have been installed, the reflection of light efficient to two light emitting sources 651 and 652 emissions when reflecting element 671 and 64 actings in conjunction of retroreflecting bar are arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 to the reflection of light efficient of two light emitting sources 651 and 652 emissions get final product.
A kind of touch-screen the 4th embodiment
As shown in Figure 8, structural representation for a kind of touch-screen the 4th embodiment of the utility model, be with the difference of structural representation shown in Figure 6, in the present embodiment, in order to strengthen the reflection efficiency of regional area, the zone 67 that reflecting element 671 and retroreflecting bar 64 are installed can also comprise the zone at close the 3rd edge 623 on second edge 622 and the 4th edge 624, as long as in this zone, the reflection of light efficient to two light emitting sources 651 and 652 emissions when reflecting element 671 and 64 actings in conjunction of retroreflecting bar are arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 to the reflection of light efficient of two light emitting sources 651 and 652 emissions get final product.
Again referring to Fig. 8, in actual applications, the zone 67 that reflecting element 671 and retroreflecting bar 64 are installed also can not comprise the zone at close the 3rd edge 623 on second edge 622, the zone that does not perhaps comprise close the 3rd edge 623 on the 4th edge 624, as long as in the zone 67 that reflecting element 671 and retroreflecting bar 64 have been installed, the reflection of light efficient to two light emitting sources 651 and 652 emissions when reflecting element 671 and 64 actings in conjunction of retroreflecting bar are arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 to the reflection of light efficient of two light emitting sources 651 and 652 emissions get final product.
Touch-screen the 7th embodiment
As shown in Figure 9, structural representation for a kind of touch-screen the 5th embodiment of the utility model, be with the difference of structural representation shown in Figure 6, in the present embodiment, the light that the zone 67 that reflecting element 671 and retroreflecting bar 64 be installed can comprise light emitting source 651 on the edge of touch-screen framework 62 or light emitting source 652 emissions and the angle of the vertical line at the edge of touch-screen framework 62 are greater than 45 zones of spending, as long as in this zone, the reflection of light efficient to two light emitting sources 651 and 652 emissions when reflecting element 671 and 64 actings in conjunction of retroreflecting bar are arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 to the reflection of light efficient of two light emitting sources 651 and 652 emissions get final product.
Again referring to Fig. 9, in actual applications, the zone 67 that reflecting element 671 and retroreflecting bar 64 be installed also can include only the angle of light emitting source 651 or 652 is transmitted on the edge of touch-screen framework 62 light and the vertical line at the edge of touch-screen framework 62 greater than the subregion in 45 zones of spending, as long as in this subregion, the reflection of light efficient to two light emitting sources 651 and 652 emissions when reflecting element 671 and 64 actings in conjunction of retroreflecting bar are arranged separately on the edge of touch-screen framework 62 greater than retroreflecting bar 64 to reflection of light efficient get final product.For example: the light that the zone 67 that reflecting element 671 and retroreflecting bar 64 be installed also can include only light emitting source 651 on the edge of touch-screen framework 62 or light emitting source 652 emissions and the angle of the vertical line at the edge of touch-screen framework 62 are greater than 50 zones of spending.
Product described in the utility model is not limited to the embodiment described in the embodiment.Those skilled in the art's technical scheme according to the present invention draws other embodiment, belongs to technological innovation scope of the present utility model equally.
Claims (8)
1. touch-screen, comprise at least two optical sensors that are installed in around the touch-screen detection zone, the processing unit that is connected with described at least two optical sensors, be installed at least two light emitting sources of the position that is close to described at least two optical sensors and be installed in described touch detection zone retroreflecting bar on every side respectively, it is characterized in that, also comprise:
Reflecting element be installed in described touch detection zone all or part of zone on every side, and the angle between the touch-surface of described touch detection zone is acute angle or obtuse angle;
In the zone that described reflecting element is installed, described retroreflecting bar is installed in by described two light emitting sources emission and through the zone that part or all of light covered of described reflecting element reflection at least, the light that described at least two light emitting sources are transmitted into described reflecting element reflexes to described retroreflecting bar through described reflecting element, again through the described reflecting element of described retroreflecting bar reflected back, reflex to described at least two optical sensors through described reflecting element again, when described reflecting element and the acting in conjunction of described retroreflecting bar are arranged separately in around the described touch detection zone to the reflection of light efficient of described at least two light emitting sources emission greater than described retroreflecting bar to the reflection of light efficient of described at least two light emitting sources emission.
2. touch-screen according to claim 1 is characterized in that, described reflecting element is a level crossing.
3. touch-screen according to claim 1 is characterized in that, at least one light emitting source is transmitted into described reflecting element and reflexes to the angle of vertical line of the light of described retroreflecting bar and described retroreflecting bar less than 30 degree through described reflecting element again.
4. according to the arbitrary described touch-screen of claim 1-3, it is characterized in that, described touch detection zone comprises first edge, second edge, the 3rd edge and the 4th edge, wherein, described first edge is relative with described the 3rd edge, described second edge is relative with described the 4th edge, the quantity of described optical sensor is two, an angle of cut place that is installed in described first edge and described second edge, another is installed in the angle of cut place at described first edge and described the 4th edge, be separately installed with light emitting source near described two optical sensors, described reflecting element is installed in around the described touch detection zone, the angle of the light of at least one light emitting source emission and the vertical line that is arranged separately in the retroreflecting bar around the described touch detection zone is greater than subregion or Zone Full in the zones of 55 degree.
5. touch-screen according to claim 4 is characterized in that, described reflecting element is installed in the Zone Full on described the 3rd edge.
6. touch-screen according to claim 5 is characterized in that, described reflecting element also is installed in the Zone Full on described the 4th edge and/or described second edge.
7. touch-screen according to claim 4 is characterized in that, described reflecting element also is installed in the zone at close described the 3rd edge on described the 4th edge and/or described second edge.
8. touch-screen according to claim 4, it is characterized in that described reflecting element also is installed in around the described touch detection zone, the light of described at least two light emitting sources emission and the angle that is arranged separately in the vertical line that touches the retroreflecting bar around the detection zone are greater than 45 degree and be less than or equal to subregion or Zone Full in the zones of 55 degree.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201158679U CN201725308U (en) | 2010-02-10 | 2010-02-10 | Touch screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201158679U CN201725308U (en) | 2010-02-10 | 2010-02-10 | Touch screen |
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| CN201725308U true CN201725308U (en) | 2011-01-26 |
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| CN2010201158679U Expired - Fee Related CN201725308U (en) | 2010-02-10 | 2010-02-10 | Touch screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135856A (en) * | 2011-12-05 | 2013-06-05 | 纬创资通股份有限公司 | Optical touch device and frame thereof |
| CN103853387A (en) * | 2012-11-30 | 2014-06-11 | 汉王科技股份有限公司 | Display device, display system and coordinate positioning method |
| CN110954807A (en) * | 2018-09-27 | 2020-04-03 | 精工爱普生株式会社 | Electronic component conveying device and electronic component inspection device |
-
2010
- 2010-02-10 CN CN2010201158679U patent/CN201725308U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103135856A (en) * | 2011-12-05 | 2013-06-05 | 纬创资通股份有限公司 | Optical touch device and frame thereof |
| CN103853387A (en) * | 2012-11-30 | 2014-06-11 | 汉王科技股份有限公司 | Display device, display system and coordinate positioning method |
| CN110954807A (en) * | 2018-09-27 | 2020-04-03 | 精工爱普生株式会社 | Electronic component conveying device and electronic component inspection device |
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Addressee: Beijing Irtouch Systems Co.,Ltd. Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20180210 |